Terms

New to skin imaging? These definitions explain the concepts behind a skin tracker and longitudinal skin monitoring.

Skin tracker: A device or system that measures and records skin condition over time so changes can be detected objectively. Lumeria is an at-home skin tracker built on multispectral imaging.
Longitudinal skin monitoring: The practice of capturing consistent, comparable skin measurements at regular intervals to reveal whether a condition is improving, stable, or worsening, as opposed to a one-time snapshot.
Multispectral imaging: Capturing images across several distinct bands of light (for example visible RGB, ultraviolet, and polarized light) to reveal skin properties that a single ordinary photo cannot show.
RGB imaging: Standard visible-light imaging across red, green, and blue channels. Lumeria uses calibrated RGB to quantify redness and inflammation.
Ultraviolet (UV) imaging: Imaging with ultraviolet light, which reveals pigmentation and sebum patterns not visible in ordinary photos. Lumeria uses UV to track pigmentation and sebum-related surface reflectance against your own baseline.
Polarized imaging: A technique using polarizing filters to separate surface shine from subsurface detail. Lumeria uses it to characterise texture and surface topography, and to track the surface's gloss signal over time.
Hyperpigmentation: Areas of skin that are darker than the surrounding skin due to excess melanin, from sun exposure, inflammation, or hormonal changes. UV imaging makes pigmentation patterns easier to track.
Sebum: The oily substance produced by the skin's sebaceous glands. Excess sebum is linked to acne and oily skin; Lumeria's UV imaging helps map sebum distribution.
Lesion: Any area of skin that differs from the surrounding tissue, including moles, spots, and rashes. Lumeria's high-resolution color mapping tracks lesion size and distribution over time.
Baseline: The initial set of measurements a monitoring system records, against which future scans are compared. A good baseline is what makes change detection meaningful.
Lumoscope: Lumeria's at-home multispectral imaging device. It captures RGB, UV, polarized, and high-resolution color images in a single standardized scan.
Dermbot: Lumeria's AI assistant. It conducts a short interview about habits, locality, and environment, then combines that context with multispectral scans to deliver recommendations and track progress.